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Commit	Line	Data
	1	/*
	2	* This file is part of DisOrde
	3	* Copyright (C) 2007 Richard Kettlewell
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License as published by
	7	* the Free Software Foundation; either version 2 of the License, or
	8	* (at your option) any later version.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
	18	* USA
	19	*/
	20	/** @file lib/unicode.h
	21	* @brief Unicode support functions
	22	*/
	23
	24	#ifndef UNICODE_H
	25	#define UNICODE_H
	26
	27	/** @brief Smart pointer into a string
	28	*
	29	* Iterators can be efficiently moved either forwards or back to the start of
	30	* the string. They cannot (currently) efficiently be moved backwards. Their
	31	* advantage is that they remember internal state to speed up boundary
	32	* detection.
	33	*
	34	* Iterators can point to any code point of the string, or to a hypothetical
	35	* post-final code point of value 0, but not outside the string.
	36	*/
	37	typedef struct utf32_iterator_data *utf32_iterator;
	38
	39	char utf32_to_utf8(const uint32_t s, size_t ns, size_t *nd);
	40	uint32_t utf8_to_utf32(const char s, size_t ns, size_t *nd);
	41
	42	size_t utf32_len(const uint32_t *s);
	43	int utf32_cmp(const uint32_t a, const uint32_t b);
	44
	45	uint32_t utf32_decompose_canon(const uint32_t s, size_t ns, size_t *ndp);
	46	char utf8_decompose_canon(const char s, size_t ns, size_t *ndp);
	47
	48	uint32_t utf32_decompose_compat(const uint32_t s, size_t ns, size_t *ndp);
	49	char utf8_decompose_compat(const char s, size_t ns, size_t *ndp);
	50
	51	uint32_t utf32_casefold_canon(const uint32_t s, size_t ns, size_t *ndp);
	52	char utf8_casefold_canon(const char s, size_t ns, size_t *ndp);
	53
	54	uint32_t utf32_casefold_compat(const uint32_t s, size_t ns, size_t *ndp);
	55	char utf8_casefold_compat(const char s, size_t ns, size_t *ndp);
	56
	57	int utf32_is_grapheme_boundary(const uint32_t *s, size_t ns, size_t n);
	58	int utf32_is_word_boundary(const uint32_t *s, size_t ns, size_t n);
	59
	60	utf32_iterator utf32_iterator_new(const uint32_t *s, size_t ns);
	61	void utf32_iterator_destroy(utf32_iterator it);
	62
	63	size_t utf32_iterator_where(utf32_iterator it);
	64	int utf32_iterator_set(utf32_iterator it, size_t n);
	65	int utf32_iterator_advance(utf32_iterator it, size_t n);
	66	uint32_t utf32_iterator_code(utf32_iterator it);
	67	int utf32_iterator_grapheme_boundary(utf32_iterator it);
	68	int utf32_iterator_word_boundary(utf32_iterator it);
	69
	70	#endif /* UNICODE_H */
	71
	72	/*
	73	Local Variables:
	74	c-basic-offset:2
	75	comment-column:40
	76	fill-column:79
	77	indent-tabs-mode:nil
	78	End:
	79	*/